Automatic level.



J. J. GARRETT.

AUTOMATIC LEVEL.

APPLICATION FILED JULY 13,1908.

8 e m TU d m n 1% a P UNITED sTATEs PATENT OFFIQE.

JOHN JOSEPH GARRETT, OF LAKE UITY, ARKANSAS, ASSIGNOR Ol ONE-HALF TO J.P. TABER 7 AND JOEL P. TABER, BOTH OF BAY, ARKANSAS.

AUTOMATIC LEVEL.

Specification of Letters Patent.

Patented June 8, 1909.

To all whom it may concern: Be it known that 1.,JOIIN Josnrn GAR- RETT,a citizen of the United States, residing at Lake City, in the county ofCraighead and State of Arkansas, have invented a new and usefulImprovement in an Automatic Level, of which the following aspecification.

This invention relates to a level designed to automatically register ininches or a fraction thereof the extent to which any Wall or other workis out of plumb, and a further object of the invention is to combinewith such a leveling device simple means for laying ditches, locatingfoundation walls etc'I The invention consists of the novel features ofconstruction hereinafter described. pointed out in the claims and shownin the accompanying drawings, in which Figure 1 is a side elevation ofthe device. Fig. 2 is a plan view. Fig. 3 is a central cross section.Fig. 4 is an inverted perspective view of a rotatable plate. Fig. 5 is aplan view of a fixed degree plate, certain posts and an indicating pinbeing shown in cross section. i

In these drawings 1 re resents the level stock upon the top of whic '1is placed a plate 2 having a degree scale laid off thereon and providedwith a central hub portion A disk 4 is centrally provided with a pin 5which fits loosely in the hub 3 so that the disk 4 can rotate above thefixed plate 2. The disk 4 is providedwith depending posts 6 the lowerends of which rest upon the marginal portion of the plate 2, and preventany rocking or swinging of the disk 4, and also serve to remove lateralstrain from the pivot pin 5, thereby avoiding any bending of said pin.The disk 4 also carries an indicating pin 7 which extends downwardly andtravels above the degree scale upon the plate 2. The disk 4 also carriestwo vertically arranged brackets 8 parallel to each other and a shaft 9is j'ournaled in said brackets.

Fixed upon this shaft-is a rod 10 which carries suitable sights 11 atits ends. From said shaft and rod depends an arm 12 carry.

ing at its lower end a cylindrical weight 13 arranged midway between andparallel to the brackets 8. The disk 4 also carries adjacent one of saidbrackets a block 14- arranged parallel to the weight 13 and having anupper concave face, upon which is laid off the scale representing inchesand fractions of an inch. A depending pointer 15 is carried by the shaft9 and swings with said shaft, working u on the scale laid off upon theblock 14. T e stock 1 is also provided with a spirit level 16 and acompass 17.

When the level 1 is placed upon a wall or other piece of work the top ofwhich is inclined relative to the surface of the earth the swinging ofthe weight 13 to bring the arm 12 into a perpendicular position willrock the shaft9 and bring the pointer 15 over that portion of the scaleformed upon the block 14 which indicates the extent of inclination ofthe work'upon which the stock is placed with respect to the groundlevel, and the scale may be so arranged that this will be showndirectly. The disk 4.02.11 be rotated withrespect to the plate 2, andthe number of degrees through which the. disk is rotated will beindicated by the depending pin 7, so that the device can be used forlaying off ditches,

or locating foundation'walls, partitions and the like which are to bearranged at certain predetermined angles to each other.

Having thus fully described my invention,

what I claim as new and desire to secure by Letters Patent is 1. Adevice of the kind described comprising a fixed plate having a scalethereon, a retatable disk mounted above and spaced from said plate, adepending indicating pin car-. ried by said disk and traveling abovesaidscale, upright brackets carried by the disk, a shaft journalcd in saidbrackets, a block having' a concave face u on which .a suitable scale isplaced, said b ock being carried by the disk, a weight supported fromsaid shaft and rigidly connected therewith, and a depending rigidpointer carriedby said shaft and working overthe concaved block. 1

. 2. The combination with a stock, of a retatablediskmountedthereon,upright,brackets carried by the disk, a shaft journaled in said brackets, a rod carried by the said shaft, a depcndingarm carried by the shaft, a weight carried by and at right angles to thearm, a block having a'concave upper face,

plane, upright brackets earried by the disk, a block upon oscillation ofthe shaft, as and for shaft mounted in said brackets, a depending thepurpose set forth. arm fixed to said shaft, a weight secured to the saidarm at right angles thereto, a scale JOHN JOSEPH GARRETT. 5 blockcarried by said dis and rotating with Witnesses:

it, and a depending pointer arni carried by JAMES P. TABER,

the shaft and swinging lengthwise of said JOEL P. TABER.

